Mononuclear manganese(III) complex with a monodeprotonated N-(2-pyridylmethyl)iminodiisopropanol ligand: synthesis, crystal structure, and catalytic properties
作者:Jihye Choi、Sojeong Lee、Ah Rim Jeong、Cheal Kim、Kil Sik Min
DOI:10.1016/j.ica.2019.119174
日期:2019.12
Abstract The reaction of N-(2-pyridylmethyl)iminodiisopropanol (H2pmidip), sodium azide, and manganese(II) salt in methanol leads to the isolation of a monomeric manganese complex of [Mn(Hpmidip)(N3)2]·CH3OH (1). The structure of 1 has been verified by single crystal X-ray diffractometry. The manganeseion in 1 is bonded with one Hpmidip− as tetradentate and two azido ligands in cis position in which
A monomeric iron(III) compound containing N-(2-pyridylmethyl)iminodiisopropanolate and thiocyanato ligands: structure, magnetic and catalytic properties
作者:Hye Jin Shin、Sojeong Lee、Cheal Kim、Kil Sik Min
DOI:10.1016/j.ica.2022.120877
日期:2022.5
The reaction of Fe(NO3)3·9H2O, sodium thiocyanate, and N-(2-pyridylmethyl)iminodiisopropanol (H2pmidip) in methanol/water mixture solution leads to the formation of a mononuclear iron(III) compound of [FeIII(Hpmidip)(NCS)2] (1). The iron ion of 1 has a distorted octahedral structure that is bonded by two thiocyanate anions and one Hpmidip- ligand. One of the two hydroxyl moieties in H2pmidip is deprotonated
Fe(NO 3 ) 3 ·9H 2 O、硫氰酸钠和N- (2-吡啶基甲基)亚氨基二异丙醇(H 2 pmidip)在甲醇/水混合溶液中的反应导致形成单核铁(III)化合物[Fe III (Hpmidip)(NCS) 2 ] ( 1 )。1的铁离子具有扭曲的八面体结构,由两个硫氰酸根阴离子和一个 Hpmidip -配体键合。H 2 pmidip中的两个羟基部分之一被去质子化,而另一个参与氢键相互作用以形成二聚体结构。1的磁性揭示了二聚体内非常弱的反铁磁相互作用,参数J = -0.75 cm -1和g = 2.068。图1表明,使用间氯过氧苯甲酸 ( m - CPBA) 对多种烯烃的催化氧化具有选择性且有效,产率适中。为了确定1中烯烃环氧化的机理,研究了过氧苯乙酸 (PPAA)的 O O 键断裂以及顺式和反式2-辛烯的竞争性实验。
Trinuclear nickel and cobalt complexes containing unsymmetrical tripodal tetradentate ligands: syntheses, structural, magnetic, and catalytic properties
作者:Jong Won Shin、Ah Rim Jeong、Sun Young Lee、Cheal Kim、Shinya Hayami、Kil Sik Min
DOI:10.1039/c6dt02701f
日期:——
giving rise to nickel(II) and cobalt(II) trinuclearcomplexes, respectively. Trinuclearcomplexes 1 and 2 are isomorphous. In 3, two terminal cobalt(III) units are coordinated to pmidip2− and two CH3CO2−. The terminal units are each linked to a central cobalt(II) cation through two oxygen atoms of pmidip2− and one oxygen atom of a bidentate acetate ion, resulting in a linear trinuclear mixed-valence cobalt